Improvement in couplings



G. W. ROWELL.

Y coUPLING.

NQ.17O,0191 PatentedNov-1e-1e75.

WITNESSES v INV NTIOR ATTOIRN EYS N. PETERS, FHOTQLWHDGRAPHER. wAsmNGTDN. D G.

UNITED STATES PATENT OFFICEo GEORGE W. ROWELL, MOUNT UPTON, NEW YORK. i

IMPROVEMENT IN COUPLINGS.

Specification forming part of Letters Patent No. 170,019, dated November 16, 1875; application filed July 24, 1875.

To all whom it may concern:

Be itA known that I, GEORGE W. ROWELL, of Mount Upton, in the county of Ohenango and State ot' N ew York, have invented a new and valuable Improvement in Couplings 5 and I do hereby declare that the following isa full, clear, and exact description of the construction and operation of the saine, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon..

Figure l of the drawings is a representation of an outside viewot' my coupling. Fig. 2 is a vertical central sectional view ot' the same, and Fig. 3 is a horizontal sectional view thereof. Fig. 4 is a detail view.

`This invention has relation to coupling or discharging spouts for milk-pans; and it consists in the construction and novel arrangement of the threaded and iianged tube, the lian ged nut engaging therewith, and the coupling-rings for securing these parts to the water-vat, as hereinafter fully shown and described. Y

In the accompanying drawings, the letter A designates a portion of the bottom of a milkpan, to which the concave ange `b of the threaded 'milk-tube C is connected. This tube is designed to be made ot" brass, and to engage with an iron nut,'D, which is provided with a ledge or ilange, e, at its lower end for the attachment of a draw-oft' or waste pipe. This combination of brass and iron will decrease the rusting` tendency. A shoulder, g, is formed upon the external wall of the tube C, and provided with a packingring, h, of rubber or other suitable material, against which the upper coupling-ring llc4 bears. Thus a water-tight joint is formed at the entrance to the screw-thread. The uppercoupling-ring k consists' of a cylindrical body, which fits within the body of the lower coupling-ring la', and a ange, f, which extends outward from its upper edge. At its lower edge are provided the bearing-lugs l. The lower coupling-ring has a iiange, f', between which and the flange f of the upper ring is received the margin ot' the aperture in the vat E, a suitable packingringV being interposed under the upper liange to secure a tight joint when said lian ge is not soldered to the vat. The lower edge ot' the ring 7c is provided with inclines or cams m, which engage with the lugs l ot the ring k when either ring is turned, and bring the ilanges toward each other upon the iron of the vat and the interposed packing. Grooves fn, aremade in the inner wall of the exterior ring k for the passage ot the lugs l of the inner ring when the latter is slipped within the former. When the parts are in place, as described, the nut D is screwed up .rmly on the tube C, securing all the parts rigidly together.

What I claim as new, and desire to secure by Letters Patent, is

The combination ofthe lian ged and threaded tube (l, the nut D, and the coupling-.rings c k', having the anges f j", the engagementlugs Z, and the cams m, substantially as specitied.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

GEORGE W. ROWELL. Witnesses:

JAcoB STOWELL, PERRY Roon. 

